Analysis

  • max time kernel
    151s
  • max time network
    161s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    21-10-2021 09:33

General

  • Target

    201e9ae321377c18400c09ff75c9aee6.exe

  • Size

    1.4MB

  • MD5

    201e9ae321377c18400c09ff75c9aee6

  • SHA1

    22402aee8967bb97e65cdc7a2b1fd051d4599bba

  • SHA256

    d0086a02cd46959e9e0e7309a97a5ab08ff482262406bfd7e35fe6351f98c124

  • SHA512

    1a865fadc93b6f95554ca6940712b181f057da66ac73e28c22fe1f1838cd12016f28ca5f05241a3f4778d34609e857913c3e1063f59ce3ba9ea7ac5d0a5909d4

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

newme122.3utilities.com:8822

newme1122.3utilities.com:8822

Mutex

dcf3fee6-c103-45ee-a2f0-f8afaa78d1fe

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    newme1122.3utilities.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-07-31T13:00:17.372768836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8822

  • default_group

    A New TIme Has Come

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    dcf3fee6-c103-45ee-a2f0-f8afaa78d1fe

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    newme122.3utilities.com

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\201e9ae321377c18400c09ff75c9aee6.exe
    "C:\Users\Admin\AppData\Local\Temp\201e9ae321377c18400c09ff75c9aee6.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2072
    • C:\Users\Admin\04687118\vfqftjs.pif
      "C:\Users\Admin\04687118\vfqftjs.pif" benowsto.dso
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4048
      • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
        "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
        3⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:2836

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\04687118\benowsto.dso
    MD5

    51853c9a0e0b028b6027d4254a053009

    SHA1

    09af088fbb6cbd981b432cb0485c281236f3de32

    SHA256

    bca12808ccc47b7ac76d98cc2ac9ab4c8a69688a8076d2e2d52049528dce16a3

    SHA512

    046260a1a942ab23eaf952d73a3610617256675efca7228ee2e7a005889e7f20c5c222a3d4429e3a600fbd0d991d77e930f931c9bb74cb867b57b8373c1c2a8b

  • C:\Users\Admin\04687118\htdvvtoec.cpl
    MD5

    7ed530856ca49cc6e529fde187cafa69

    SHA1

    45decbe54611c757d6ff1897cc5d8736663a235e

    SHA256

    b7dcb66c6681eca56a487148033d518dcf6bbc9f8daeb36065a62300bbf6bf18

    SHA512

    f653a02643cd32bd2c330c0a3e775ef518364229979a730e549a2bae4c2dd203b24e32b28572a8bfad81141cb0147e22fa177102a9428561b330554f51c5347a

  • C:\Users\Admin\04687118\vfqftjs.pif
    MD5

    8935e163bb79e8d4b40b73521a06a0d1

    SHA1

    dfd9f6cd5dabf0c2fae0186b5471f025f542c708

    SHA256

    3a2b62144b3b6bc612770de7777233c96ea35e50e9fd7b0b482862825d728fdb

    SHA512

    76620b23fe5f2bcc783bcbd7fb27a68a171751a96b459f757045f80e027d452724c73292a008acad58eb58b6eb99dddf82130a83e761e35b7e5c4d89b058d175

  • C:\Users\Admin\04687118\vfqftjs.pif
    MD5

    8935e163bb79e8d4b40b73521a06a0d1

    SHA1

    dfd9f6cd5dabf0c2fae0186b5471f025f542c708

    SHA256

    3a2b62144b3b6bc612770de7777233c96ea35e50e9fd7b0b482862825d728fdb

    SHA512

    76620b23fe5f2bcc783bcbd7fb27a68a171751a96b459f757045f80e027d452724c73292a008acad58eb58b6eb99dddf82130a83e761e35b7e5c4d89b058d175

  • C:\Users\Admin\04687118\xekts.rve
    MD5

    9a23a74450492ba99ed6e21118519974

    SHA1

    097ebe56f9b80153cc85a9967a759a590c3e2fcd

    SHA256

    2afd228cda8311585ceada01a515dc32f21fc87e31b2c3eaec6fadb489779cbc

    SHA512

    e1885d3657275d8e70f0f61ac0a6af6c9202e233def34e820fb9054ab07f0b73c83edc667787263e3a29933fefa24d027cd61b14d3c156ece15692b9d8561511

  • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    MD5

    0e06054beb13192588e745ee63a84173

    SHA1

    30b7d4d1277bafd04a83779fd566a1f834a8d113

    SHA256

    c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

    SHA512

    251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

  • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    MD5

    0e06054beb13192588e745ee63a84173

    SHA1

    30b7d4d1277bafd04a83779fd566a1f834a8d113

    SHA256

    c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

    SHA512

    251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

  • memory/2836-131-0x0000000005B60000-0x000000000605E000-memory.dmp
    Filesize

    5.0MB

  • memory/2836-135-0x0000000005EB0000-0x0000000005EB6000-memory.dmp
    Filesize

    24KB

  • memory/2836-121-0x0000000000F00000-0x000000000141B000-memory.dmp
    Filesize

    5.1MB

  • memory/2836-127-0x0000000006060000-0x0000000006061000-memory.dmp
    Filesize

    4KB

  • memory/2836-128-0x0000000005A70000-0x0000000005A71000-memory.dmp
    Filesize

    4KB

  • memory/2836-129-0x0000000005B60000-0x0000000005B61000-memory.dmp
    Filesize

    4KB

  • memory/2836-130-0x0000000005A00000-0x0000000005A01000-memory.dmp
    Filesize

    4KB

  • memory/2836-146-0x0000000006FB0000-0x0000000006FB1000-memory.dmp
    Filesize

    4KB

  • memory/2836-132-0x0000000005B20000-0x0000000005B25000-memory.dmp
    Filesize

    20KB

  • memory/2836-133-0x0000000005B30000-0x0000000005B3D000-memory.dmp
    Filesize

    52KB

  • memory/2836-134-0x0000000005E90000-0x0000000005EA5000-memory.dmp
    Filesize

    84KB

  • memory/2836-122-0x0000000000F1E792-mapping.dmp
  • memory/2836-136-0x0000000006050000-0x0000000006057000-memory.dmp
    Filesize

    28KB

  • memory/2836-137-0x00000000066A0000-0x00000000066A6000-memory.dmp
    Filesize

    24KB

  • memory/2836-138-0x00000000066B0000-0x00000000066BD000-memory.dmp
    Filesize

    52KB

  • memory/2836-139-0x00000000066E0000-0x00000000066E9000-memory.dmp
    Filesize

    36KB

  • memory/2836-140-0x0000000006700000-0x000000000670F000-memory.dmp
    Filesize

    60KB

  • memory/2836-141-0x0000000006710000-0x000000000671A000-memory.dmp
    Filesize

    40KB

  • memory/2836-142-0x0000000006720000-0x0000000006739000-memory.dmp
    Filesize

    100KB

  • memory/2836-143-0x0000000006880000-0x0000000006883000-memory.dmp
    Filesize

    12KB

  • memory/2836-144-0x00000000069D0000-0x00000000069F9000-memory.dmp
    Filesize

    164KB

  • memory/2836-145-0x0000000006A20000-0x0000000006A2F000-memory.dmp
    Filesize

    60KB

  • memory/4048-115-0x0000000000000000-mapping.dmp